公开(公告)号：US20140037954A1

公开(公告)日：2014-02-06

申请号：US13954679

申请日：2013-07-30

Applicant: NITTO DENKO CORPORATION

Inventor： Toru ISEKI ,  Shogo SASAKI ,  Souya JO ,  Masahiko ANDO

IPC: C09J7/02

CPC classification number: C09J7/38 ,  C08G18/222 ,  C08G18/4816 ,  C08G18/4825 ,  C08G18/4829 ,  C08G18/792 ,  C08G18/794 ,  C08G18/8029 ,  C08K5/0091 ,  C08K5/07 ,  C09J175/08 ,  C09J2475/00 ,  Y10T428/2896

Abstract: A resin composition includes: a polyol (A) having at least two OH groups; a polyfunctional isocyanate compound (B); a catalyst (C); and a compound (D) that undergoes keto-enol tautomerization, in which: a content ratio of the polyfunctional isocyanate compound (B) with respect to 100 parts by weight of the polyol (A) is 1 part by weight to 100 parts by weight; and the catalyst (C) includes an iron-based compound containing iron as an active center thereof. The resin composition can serve as a pressure-sensitive adhesive composition for forming a pressure-sensitive adhesive layer containing a polyurethane-based resin. Also provided are a pressure-sensitive adhesive sheet and a surface protective film each including such pressure-sensitive adhesive layer.

Abstract translation: 树脂组合物包括：具有至少两个OH基团的多元醇（A） 多官能异氰酸酯化合物（B）; 催化剂（C）; 和进行酮 - 烯醇互变异构化的化合物（D），其中：多官能异氰酸酯化合物（B）相对于100重量份多元醇（A）的含量比为1重量份〜100重量份 ; 并且催化剂（C）包括含铁作为其活性中心的铁基化合物。 树脂组合物可以用作形成含有聚氨酯类树脂的压敏粘合剂层的压敏粘合剂组合物。 还提供了各自包括这种压敏粘合剂层的压敏粘合片和表面保护膜。

公开(公告)号：US20200255711A1

公开(公告)日：2020-08-13

申请号：US16648044

申请日：2018-06-11

Applicant: NITTO DENKO CORPORATION

Inventor： Toru ISEKI ,  Kazumichi KATO ,  Hideyuki TOKUYAMA ,  Mitsuhiro KANADA

IPC: C09J183/04 ,  C09J11/04 ,  C08J9/30 ,  C08J9/00

Abstract: Provided is an adsorption temporary fixing sheet having a sufficient shear adhesive strength in a direction parallel to its surface, having a weak adhesive strength in a direction vertical to the surface, and having excellent antistatic performance. The adsorption temporary fixing sheet includes a foam layer including an open-cell structure, and has a surface resistivity of from 1.0×104 to 1.0×1010Ω/□, wherein, when a silicon chip vertical adhesive strength of a surface of the foam layer after 18 hours at each of such different temperatures as −30° C., 23° C., or 80° C. is represented by V1, V2, or V3 (N/1 cm□), and when a silicon chip shearing adhesive strength of the surface of the foam layer after 18 hours at each of such different temperatures as −30° C., 23° C., or 80° C. is represented by H1, H2, or H3 (N/1 cm□), relationships of V1

公开(公告)号：US20190001618A1

公开(公告)日：2019-01-03

申请号：US16064364

申请日：2016-12-16

Applicant: NITTO DENKO CORPORATION ,  DOW CORNING TORAY CO., LTD.

Inventor： Kohei DOI ,  Toru ISEKI ,  Akihiro NAKAMURA ,  Syuji ENDO

IPC: B32B5/18 ,  B29C44/02 ,  B29C44/34 ,  C08J9/28 ,  C09J7/26 ,  C09J7/38

Abstract: Provided is a silicone foam sheet that expresses excellent bubble removability, that has satisfactory adhesiveness with an adherend and satisfactory sealability, that maintains the expression of these effects even when its thickness is reduced, that preferably expresses a stable modulus of elasticity over a region from a low-temperature region to a high-temperature region, and that suppresses both of its compression set in the low-temperature region and its compression set in the high-temperature region to low levels. Also provided is a method of producing such silicone foam sheet. The silicone foam sheet comprises an open-cell structure having a thickness of from 10 μm to 3,000 μm, wherein wherein an open-cell ratio is 90% or more, an average cell diameter of the silicone foam sheet is from 1 μm to 50 μm, and 90% or more of all cells therein has a cell diameter of 80 μm or less.

公开(公告)号：US20140037949A1

公开(公告)日：2014-02-06

申请号：US13954640

申请日：2013-07-30

Applicant: NITTO DENKO CORPORATION

Inventor： Souya JO ,  Shogo SASAKI ,  Toru ISEKI ,  Masahiko ANDO

IPC: C09J7/02

CPC classification number: C09J7/38 ,  C08G18/4812 ,  C08G18/4816 ,  C08G18/4825 ,  C08G18/4829 ,  C08G18/8029 ,  C09J175/08 ,  C09J2201/122 ,  C09J2203/318 ,  C09J2203/326 ,  C09J2475/00 ,  Y10T428/2848 ,  Y10T428/2896

Abstract: Provided is a surface protective film that uses a polyurethane-based resin in a pressure-sensitive adhesive layer, the surface protective film being able to achieve both of low contamination property and adhesive residue reduction, and having excellent reworkability, wettability, and transparency as well. Also provided are an optical member and an electronic member each having attached thereto such surface protective film. The surface protective film includes: a backing layer; and a pressure-sensitive adhesive layer, in which: the pressure-sensitive adhesive layer includes a polyurethane-based resin; the polyurethane-based resin includes a polyurethane-based resin obtained by curing a composition including a polyol (A) having at least two OH groups and a polyfunctional isocyanate compound (B); and (1) the polyol (A) includes 50 wt % or more of a polyol having two OH groups and a number-average molecular weight Mn of 3,000 to 6,000, or (2) the polyfunctional isocyanate compound (B) includes a polyfunctional aromatic isocyanate compound.

Abstract translation: 提供了一种在压敏粘合剂层中使用聚氨酯类树脂的表面保护膜，该表面保护膜能够实现低污染性和粘合剂残留降低，并且还具有优异的再加工性，润湿性和透明性 。 还提供了一种光学构件和各自附着有这种表面保护膜的电子构件。 表面保护膜包括：背衬层; 和粘合剂层，其中：所述压敏粘合剂层包含聚氨酯类树脂; 聚氨酯类树脂包括通过固化包含具有至少两个OH基的多元醇（A）和多官能异氰酸酯化合物（B）的组合物而获得的聚氨酯类树脂; 和（1）多元醇（A）包含50重量％以上的具有两个OH基的多元醇和数均分子量Mn为3,000〜6,000的多元醇，或者，（2）多官能异氰酸酯化合物（B） 异氰酸酯化合物。

公开(公告)号：US20230071452A1

公开(公告)日：2023-03-09

申请号：US17792916

申请日：2020-08-20

Applicant: NITTO DENKO CORPORATION

Inventor： Junji FUKUHARA ,  Masahito NIWA ,  Toru ISEKI ,  Ryosuke YOKOKAWA

IPC: C09J7/38 ,  C09J7/24 ,  C09J133/08

Abstract: A double-sided pressure-sensitive adhesive tape includes an acrylic pressure-sensitive adhesive, wherein the acrylic pressure-sensitive adhesive is formed from an acrylic pressure-sensitive adhesive composition, wherein the acrylic pressure-sensitive adhesive composition contains an acrylic partially polymerized product obtained by polymerizing a monomer component (m1), a monomer component (m2), a cross-linking agent, and a photopolymerization initiator, wherein the monomer component (m2) contains an alkyl (meth)acrylate having, at an ester terminal thereof, an alkyl group having 4 to 10 carbon atoms, and a polymerizable monomer whose corresponding homopolymer has a Tg of 0° C. or more, wherein in the monomer component (m2), a content of the polymerizable monomer whose corresponding homopolymer has a Tg of 0° C. or more is from 10 parts by weight to 90 parts by weight with respect to 100 parts by weight of the alkyl (meth)acrylate having, at an ester terminal thereof, an alkyl group having 4 to 10 carbon atoms.

公开(公告)号：US20150064460A1

公开(公告)日：2015-03-05

申请号：US14464218

申请日：2014-08-20

Applicant: NITTO DENKO CORPORATION

Inventor： Masamichi MATSUMOTO ,  Tatsumi AMANO ,  Toru ISEKI ,  Hiromoto HARUTA

IPC: C09J7/02 ,  B32B27/36 ,  C09J133/08 ,  B32B27/08

CPC classification number: C09J133/08 ,  B32B7/12 ,  B32B27/08 ,  B32B27/12 ,  B32B27/308 ,  B32B27/36 ,  B32B2255/10 ,  B32B2255/26 ,  B32B2307/202 ,  B32B2307/412 ,  B32B2457/20 ,  C08F220/18 ,  C09J7/385 ,  C09J2203/318 ,  Y10T428/2891 ,  Y10T428/31551 ,  C08F2220/1858 ,  C08F220/20 ,  C08F220/06 ,  C08F2220/1891 ,  C08F2220/1825

Abstract: A carrier film for transparent conductive films of the invention includes a support and a pressure-sensitive adhesive layer provided on at least one side of the support, wherein the pressure-sensitive adhesive layer is made from a pressure-sensitive adhesive composition including: a (meth)acryl-based polymer (A) having a glass transition temperature of −50° C. or lower and obtained by polymerization of a monomer component containing an alkyl(meth)acrylate and a hydroxyl group-containing monomer; an isocyanate crosslinking agent (B); and a catalyst (C) having an iron active center. The carrier film for transparent conductive films, with which the formation of irregularities on an adherend surface and zipping can be prevented.

Abstract translation: 本发明的透明导电膜用载体膜包括支持体和设置在载体的至少一侧的压敏粘合剂层，其中，压敏粘合剂层由压敏粘合剂组合物制成，该粘合剂组合物包含： 通过含有（甲基）丙烯酸烷基酯和含羟基单体的单体成分的聚合得到的玻璃化转变温度为-50℃以下的（甲基）丙烯酸系聚合物（A） 异氰酸酯交联剂（B）; 和具有铁活性中心的催化剂（C）。 用于透明导电膜的载体膜，可以防止在被粘物表面上形成凹凸，并且可以防止拉伸。

公开(公告)号：US20140037948A1

公开(公告)日：2014-02-06

申请号：US13954623

申请日：2013-07-30

Applicant: NITTO DENKO CORPORATION

Inventor： Souya JO ,  Shogo SASAKI ,  Toru ISEKI ,  Masahiko ANDO

IPC: C09J7/02

CPC classification number: C09J7/38 ,  C08G18/222 ,  C08G18/4812 ,  C08G18/4816 ,  C08G18/4825 ,  C08G18/4829 ,  C08G18/792 ,  C08G18/8029 ,  C09J175/08 ,  C09J2201/122 ,  C09J2201/622 ,  C09J2203/318 ,  C09J2203/326 ,  C09J2475/00 ,  Y10T428/2848 ,  Y10T428/2896

Abstract: A surface protective film, including: a backing layer; and a pressure-sensitive adhesive layer, in which: the pressure-sensitive adhesive layer includes a polyurethane-based resin; and the surface protective film has a pressure-sensitive adhesive strength for an acrylic plate of 0.5 N/25 mm or less after being attached to the acrylic plate and stored at 70° C. for 1 day. Another surface protective film including: a backing layer; and a pressure-sensitive adhesive layer, in which: the pressure-sensitive adhesive layer includes a polyurethane-based resin; the polyurethane-based resin includes a polyurethane-based resin obtained by curing a composition including a polyol (A) having at least two OH groups and a polyfunctional isocyanate compound (B); and the polyfunctional isocyanate compound (B) includes a polyfunctional aromatic isocyanate compound.

Abstract translation: 表面保护膜，包括：背衬层; 和粘合剂层，其中：所述压敏粘合剂层包含聚氨酯类树脂; 并且表面保护膜在连接到丙烯酸板之后具有0.5N / 25mm或更小的丙烯酸板的压敏粘合强度，并在70℃下储存1天。 另一表面保护膜包括：背衬层; 和粘合剂层，其中：所述压敏粘合剂层包含聚氨酯类树脂; 聚氨酯类树脂包括通过固化包含具有至少两个OH基的多元醇（A）和多官能异氰酸酯化合物（B）的组合物而获得的聚氨酯类树脂; 并且多官能异氰酸酯化合物（B）包括多官能芳族异氰酸酯化合物。

公开(公告)号：US20130158199A1

公开(公告)日：2013-06-20

申请号：US13719917

申请日：2012-12-19

Applicant: NITTO DENKO CORPORATION

Inventor： Toru ISEKI ,  Keisuke HIRANO

IPC: C09J133/14

CPC classification number: C09J133/14 ,  C08K5/0091 ,  C08K5/07 ,  C08K5/29 ,  C08K5/34924 ,  C09J7/385 ,  C09J133/066 ,  C09J2205/102

Abstract: Provided are a pressure-sensitive adhesive composition that is produced with no tin compound, has a sufficiently long pot life, and can be rapidly crosslinked in the process of forming a pressure-sensitive adhesive layer; and a pressure-sensitive adhesive layer and a pressure-sensitive adhesive sheet each produced using such a pressure-sensitive adhesive composition. A pressure-sensitive adhesive composition, comprising: 100 parts by weight of an acrylic polymer (A) having an active hydrogen-containing functional group; 0.1 parts by weight to 10 parts by weight of an isocyanate crosslinking agent (B); 0.002 parts by weight to 0.5 parts by weight of a catalyst (C) having an iron active center; and a compound (D) capable of undergoing keto-enol tautomerism, wherein the weight ratio (D/C) of the compound (D) capable of undergoing keto-enol tautomerism to the catalyst (C) having an iron active center is from 3 to 70.

Abstract translation: 提供一种不含锡化合物生产的粘合剂组合物，其使用寿命足够长，并且在形成压敏粘合剂层的过程中可快速交联; 以及使用这种压敏粘合剂组合物制造的压敏粘合剂层和压敏粘合片。 一种压敏粘合剂组合物，其包含：100重量份具有含活性氢的官能团的丙烯酸类聚合物（A） 0.1重量份-10重量份的异氰酸酯交联剂（B）; 0.002重量份至0.5重量份具有铁活性中心的催化剂（C）; 和能够进行酮 - 烯醇互变异构化的化合物（D），其中能够经历酮 - 烯互变异构化的化合物（D）与具有铁活性中心的催化剂（C）的重量比（D / C）为3 到70。